Lieting-jack



I E.' J. LEMAN.

LIFTING JACK.

APPLICATION man MAYI, 19H.

Patented July 1919 FFTG EDWARD J. LEMAN, OF MORTON, ILLINOIS.

LIFTING-JACK.

Specification of Letters Patent.

Patented July 22, 1919.

Application filed May 1, 1917. Serial No. 165,694.

nois, have invented certain new and useful Improvements in Lifting-Jacks, and do hereby declare that the following is-a full, clear, andexact description of the invention, which will enable others skilled inthe art to which it appertains to make and use the same.

This invention relates to a lifting jack and moreparticularly to alifting jack for automobiles.

One bf the objects of the invention is to provide a jack for engagingthe wheel of an automobile or other vehicle that can be clamped theretomaking a rigid support for the same. 1

Another object is to furnish a jack for each wheel which in the act oflifting the wheel will automatically clamp itselftheree to and act tosupport the vehicle which can be shifted from place to place on thefloor or turned around as upon a turn-table, the

jack being provided with supporting wheels for the purpose.

Another obJect 1s to furnish a jack having a part to engage beneath thehub of the wheel of the vehicle and having apart to engage over the rimor felly of the wheel, the relation of the parts being such that whenthe wheel is raised it will be firmly clamped so that the wheel and jackare as though a single structure. 7

Another object is to provide a jack that can be clamped firmly andrigidly to the wheel of avehiole and provided with casterwheels which inuse will lie outside of the point of contact of the Wheel with theground surface.

To the end that the invention may be understood I have provided theaccompanying drawing, in which,

The jack consists first of a supporting frame or platform which may beconstructed 111 one of several ways. It may be cast or, if preferred,may consist of a single length of metal bar of the desired crosssectional area formed into an elongated frame A whose terminal ends mayabut as shown in Fig. 4:,the two sides of the frame being substantiallyparallel. 'Said frame incloses at each extremity a suitable casting Bsecured in said frame by means of bolts C, for example, said castingshaving beneath each of them a caster-wheel D swiveled thereto andadapted to freely swing about their pivots E in said casting B. Thesecasters may be of any approved form and preferably of the ball-bearingvariety.

F is a brace substantially in the form of a V, its ends being suitablysecured to one of the parts of the frame by means of rivets G, forexample, the base of the brace being preferably flattened so as toreceive the terminal ends of the frame A and each of the latter issecured thereto by means of rivets H, for example, said rivets alsopassing through the base of a portion of a U- shaped yoke J securing allin a thoroughly rigid manner.

.The said yoke is provided with one or more holes K, Fig. 5, one of themreceiving a bolt L acting as a pivot for a member which terminates atits outer end in a hook M adapted to overlie the rim or felly of thewheel as shown in Fig. 2, whose purpose will be explained presently.

N N indicate two spaced uprights lying substantially parallel to oneanother and preferably made ofchannel-bar, their lower ends beingsecured to the frame A by means of bolts or rivets 0, Fig. 1. These areheld rigidly in a perpendicular position by means of diagonal braces Pwhose upper ends are suitably secured to them, the lower ends of thebraces being secured to the opposite side of the frame by means of boltsor rivets Q.

Between the upper ends of the uprights N is pivotedat RR a lever S inthe form of a yoke, by preference, the free ends of which extend beyondthe pivots, and T is a stirrup whose extremities are pivotedrelativelyto the extended ends of the described portion S, for instanceon a bar or rod U. The manner of using the jackisclearly shown in thefirst two figures wherein after placing it close to the wheelindicatedby 2 with the hook M overlying the felly the lever S is made to occupy aposition which will permit the stirrup T to be engaged beneath the hub Vof the said wheel.

By depressing the lever the wheel is ralsed thereby bringing its fellyup into the hook M, the continued lifting movement drawing the fellyfirmly into the hook. In the continued lifting action the tendency is toshorten the distance between that part of the felly upon which the hookrests and the pivot L of the latter. This draws the wheel and the frameA of the jack firmly together, acting to clamp them one to the other. Inaddition the wheel is clamped between the hook M and said stirrup and asthe full downward movement of the lever is completed it is moved inwarduntil the pivot points of the parts, S, T, are in such a relation thatthe weight of the vehicle cannot re-act to raise said lever, the latterbeing preferably placed against the spokes of the wheel, thus carryingthe pivot at U outward or outside of a vertical line drawn through thecenters of the said pivot U and the pivot R. The stirrup may be providedwith one or more holes W for adjusting it relatively to the lever S toaccommodate wheels of different diameters. Also, the holes K in theU-shaped member J admit of the adjustment of the hook M for the samepurpose.

Slight changes maybe made in the structures without departing from theinventive idea, it being observed that the introduction of the hook Moperating as a clamping member in conjunction with the stirrup T resultsin firmly clamping the wheel and the jack together so that by attachingone of the jacks to each wheel the vehicle is then supported above thefloor so that it may be shifted to any position desired or be readilyturned around.

The simplicity of the jack and the fact that it can be thus clamped to awheel makes it of the greatest value for the quick lifting of the tiresfrom the floor for removing the weight from them when the vehicle is notin use.

If used for this purpose only the casters D need not be used but theiraddition admits of the ready shifting of the vehicle from place to placeon occasion.

Having thus described my invention, I claim:

1. A jack for engaging in the wheel of an automobile comprising awheeled platform, a hook pivoted at one end thereon and adapted at itshooked end to pass through the wheel and engage over its rim for holdingthe same against the said platform, a standard supported upon theplatform, and a lifting part thereon to engage and lift the wheel, therelation of the lifting part both Copies 'of this patent may be obtainedfor live cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

wheeled platform, a hook pivoted at one end thereon and adapted atitshooked end to pass through the wheel and engage over its rim for holdingthe same against the said platform, a standard supported upon the edgeof the platform lying nearest the wheel-rim, and a lifting part thereonto engage and lift the wheel, the relation of the lifting part both tothe portion of the wheel which it engages and to the said hook beingsuch that the higher the wheel is lifted toward its limit of raisingmovement the more firmly it is forced up into the hook and the morefirmly the rim is held against said platform by said book.

3. A jack for engaging and lifting a wheel of a vehicle comprising aplatform, a member pivoted upon and extending laterally from theplatform terminating in a downwardly turned hook outside said platformin'position to engage over the rim of the wheel at the side thereofremote from the platform, a standard uprising from the platform, and aart mounted thereon to engage the wheel-1111 1 for lifting the wheel-riminto the hook and for sustaining the wheel in the raised position, saidhook adapted in the lifting movement to draw the rim toward and clamp itagainst the platform.

4. 'A jack including in its construction a platform including spacedportions forming an open frame, a wheeled member for each end of saidplatform having a part adapted to enter between the portions and alsohaving an extended shoulder to receive the portions upon it, means tosecure the said part to the portions, a yoke secured inside the platformto one of the portions including a series of holes, a member lying at.one end within the yoke and having'a downwardly turned hook at itsother end lying outside the platform, means to pivotally support themember at any one of the holes, a standard erected upon the platform atthatside thereof beyond which the hook extends, and a lifting andsupporting member carried by the standard.

In testimony whereof I affix my signature, in presence of two witnesses.

EDWARD J. LEMAN.

Witnesses:

W. I. SLEMMoNs, L. M. THURLOW.

